The Effect of Crack Width on Chloride-Induced Corrosion of Steel in Concrete
When subjected to loading or thermal shrinkage, reinforced concrete structures usually behave in a cracking state, which raises the risk of bar corrosion from the working environment. The influence of cover cracking on chloride-induced corrosion was experimentally investigated through a 654-day labo...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2017/3968578 |
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| author | Weiwei Li Weiqing Liu Shuguang Wang |
| author_facet | Weiwei Li Weiqing Liu Shuguang Wang |
| author_sort | Weiwei Li |
| collection | DOAJ |
| description | When subjected to loading or thermal shrinkage, reinforced concrete structures usually behave in a cracking state, which raises the risk of bar corrosion from the working environment. The influence of cover cracking on chloride-induced corrosion was experimentally investigated through a 654-day laboratory test on cracked reinforced concrete specimens exposed to chloride solution. The concrete specimens have a dimension of 100 mm × 100 mm × 400 mm and a single prefabricated crack at the midspan. When the percentage concentration of chloride ion (0.6%, 1.2%, 2.1%, 3.0%, and 6.0%) and crack width (uncracked, 0.2, 0.3, 0.4, and 0.5 mm) are taken as variables, the experimental results showed that the corrosion rates for cracked specimens increased with increasing percentage concentration of chloride and increasing crack width. This study also showed the interrelationship between crack width and percentage concentration of chloride on the corrosion rate. In addition, an empirical model, incorporating the influence of the cover cracking and chloride concentration, was developed to predict the corrosion rate. This model allows the prediction of the maximum allowable wcr based on the given percentage concentration of chloride in the exposure condition. |
| format | Article |
| id | doaj-art-2cb0c4e5c02a4d94a65e2ba9c083ebd2 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-2cb0c4e5c02a4d94a65e2ba9c083ebd22025-08-20T03:55:12ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422017-01-01201710.1155/2017/39685783968578The Effect of Crack Width on Chloride-Induced Corrosion of Steel in ConcreteWeiwei Li0Weiqing Liu1Shuguang Wang2College of Civil Engineering, Nanjing Tech University, Nanjing 211816, ChinaCollege of Civil Engineering, Nanjing Tech University, Nanjing 211816, ChinaCollege of Civil Engineering, Nanjing Tech University, Nanjing 211816, ChinaWhen subjected to loading or thermal shrinkage, reinforced concrete structures usually behave in a cracking state, which raises the risk of bar corrosion from the working environment. The influence of cover cracking on chloride-induced corrosion was experimentally investigated through a 654-day laboratory test on cracked reinforced concrete specimens exposed to chloride solution. The concrete specimens have a dimension of 100 mm × 100 mm × 400 mm and a single prefabricated crack at the midspan. When the percentage concentration of chloride ion (0.6%, 1.2%, 2.1%, 3.0%, and 6.0%) and crack width (uncracked, 0.2, 0.3, 0.4, and 0.5 mm) are taken as variables, the experimental results showed that the corrosion rates for cracked specimens increased with increasing percentage concentration of chloride and increasing crack width. This study also showed the interrelationship between crack width and percentage concentration of chloride on the corrosion rate. In addition, an empirical model, incorporating the influence of the cover cracking and chloride concentration, was developed to predict the corrosion rate. This model allows the prediction of the maximum allowable wcr based on the given percentage concentration of chloride in the exposure condition.http://dx.doi.org/10.1155/2017/3968578 |
| spellingShingle | Weiwei Li Weiqing Liu Shuguang Wang The Effect of Crack Width on Chloride-Induced Corrosion of Steel in Concrete Advances in Materials Science and Engineering |
| title | The Effect of Crack Width on Chloride-Induced Corrosion of Steel in Concrete |
| title_full | The Effect of Crack Width on Chloride-Induced Corrosion of Steel in Concrete |
| title_fullStr | The Effect of Crack Width on Chloride-Induced Corrosion of Steel in Concrete |
| title_full_unstemmed | The Effect of Crack Width on Chloride-Induced Corrosion of Steel in Concrete |
| title_short | The Effect of Crack Width on Chloride-Induced Corrosion of Steel in Concrete |
| title_sort | effect of crack width on chloride induced corrosion of steel in concrete |
| url | http://dx.doi.org/10.1155/2017/3968578 |
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